I see your posts Seanboy.

I really hate dictionary definitions...but gonna do it anyway...from my olde Websters Collegiate published back in 1961....in the U.S.A.

"Celt 1. An individual of any of the various Celtic-speaking peoples, including the ancient Gauls and Britons and the modern Irish, Scots, Welsh, and Bretons. 2. A member of a race of central and western Europe described by the ancients as tall and blond."

Hardly a thorough definition. I'm guessing it depends on what criteria you use, what your focus is, and how you slice and dice the peoples involved.

Hence, many answers and many more opinions.

Including a basketball team in Boston...

Ron